Casing for universal joints



R. R. GRENlNGER Nov. 23 ,1926. 1,607,616

GASING FO-R UNIVERSAL JOINTS Filed Nov. l2 1925 I F/G 1 Tk-2l 20 52 i /O/ ,Raaf/w HEM GRM/Nam |NvENToR Patented Nov. 23, 1926.

ROBERT REED GRENINGER, F ROCHESTER, NEW YORK.

CASING FOR UNIVCERSAL JOINTS. y

Application led November 12, 1925. Serial No. 68,6'53.

' My invention relates to casings for encased universal joints and has for its object to produce a casing that will retain thel lubricant and thereby prevent the joint u from running dry in Service.

A further object is to produce a packing interposed in such a manner between an inner and outer casing that the lubricant will be kept scraped away from the inside surm face of the outer caslng and by centrifugal force be thrown back into the inner casing.

I have found that in the universal joints constructed after the manner disclosed in U. S. Patent 958,023 granted May 17 1910,

to C. W. Spicer that the lubricant enters betweenv theinner and outer casing and is forced under thel packing by centrifugal force. In endeavoring to overcome this objectional feature I have discovered that if au the inside casing was constructed so that the lubricant is wiped oif the inside of the outside casing centrifugal force would tend to throw the grease, thus wiped oif, back into i the inner casing and thereby prevent it ee from being forced out,under the packing. The foregoing and other features of my -invention will now be described in connection with the accompanying drawing 'form-j ing parts of this disclosure in which I have w. represented my casing in its preferred form,

after which I shall point out more particularly in the claim those features which I believe to be'new and of -myvown invention.

In the drawings accompanying and forming partof this specification:

Figure 1 is a longitudinal section of my casing applied to a standard universal joint. Figure 2 is a view lookirg from the right with the outside casing removed.

Figure 3 is a part section lof a modified form of my invention;

In the drawin s I 'have illustrated a standard univers'ajoint comprising a driving member 10, a driven member'- 11, con-A nected together for -universal movement through the journal 12. To encase the joint, I provide an inner casing 20 and an outer casing 30. The inner casing 20 as shown `is rovided withy a iange 21 for conveniencev 1n attaching to the driving member 10 and the outer casing is provided with a sleeve 31.

for mounting at the driven member 11. The outer casing is also provided with a packin 32 which rides on the outside sur'- 5 face o` ,the'inner casing 20,

casing provided with an annu The description so far is common to the universal joint disclosed in the Unitedv States Patent heretofore specifically mentioned.

The inner edge of my inner vcasing 20 may be lared frusto conically as shown in Figure 3 so that it rides upon the inside of the outside casing as shown or it maybe provided with an annular retaining frusto conical ring 22 in which a ring of .packing .23 is inserted. It will be observed by refering to Figure'v 1 that this packing scrapes against the inside ofthe outside ring and isset at an angle to the longitudinal axis ,of the joint, -the smaller end of the frusto conical portion being away from the joint member. The object of this isto present a scraping means to wipe the inside of the outer casing free from lubricant and as the lubrlcantpileskup on the angular scraper,

centrifugaidorces leads it back again into the inner casing.

I wish it. distinctly understood that my improvement in casingfor universal vjoints herein described and illustrated is in the form in which I desire to construct it and that changes or variations `may be made as' may be convenient or desirable without departing from the salient features of iny invention and I therefore intrust the following claims to cover such modirations as naturally fall within -the lines of the invention.

I claim:

1. A casing for universal joint compris ing a partly spherical casing providedwith an annular iange set at an angle to the longitudinal axis the smallest diameter thereof being furthest away from the joint, an outer ar flange containing a packing, said acking adapted to ride on the outside, of t e inside casing, a packing ada ted to be held within the dan of the insi e casing and contact with t e inside of the outside casing at an angle to the longitudinal axis, said 'angle converging away frein the joint whereby the lubricant is wiped of the outer casing and led away fromthe leak casing. ,Y

2. A casing foru'niver'sal' joints comprising a partly spherical casing. provided with a frusto conical opening therein thesmallest l diameter thereof beingofurthest away from the joint,`an outer casing adapted to close point back into the inner los the opening in the inner casing and pro- 1 ,30

vided with an annular packing rin adapted to contact with the outside of t e partly spherical portion of the inside casing, the small engl of the said frusto conical portion Y contacting with the inner side of the outer casing whereby the lubricant is wiped off the guter casing and led away from the leak point back into the inner casing. i

3. A casing for universal joints comprising a partly splieri: al casing provided with a frusto conical opening therein the smallest diameter thereof being furthest away from the joint, and adapted to hold a frusto conical ring of packing, an outer casing adapted to `close the opening in the inner casing and provided with an annular packing ring adapted to ride on the partly spherical portion of the inside casin'r, said rusto 'conical' ring like packing adapted to ride on the inside of the outside casing whereby the lubricant is wiped oi the outer casing and led away from the leak point back into the inner casing. A

l. In an incased universal joint provided with an inner and outer casing, a packing ring interposed between the casings set at an angle in the inner casing to the horizontal axis thereof so that the packing will scrape the lubricant off the outer casing and be lead away from the leak point back into the inner casing.

In an incased universal joint provided with an inner and outer casing, the inner casing contacting with the outer casing at an angle to the horizontal aXis sothat the lubricant will be scraped off the inside surface of the outer casing and, be led away -from the leak point back into the inner casing.

In witness whereof I have ailixed my signature.

ROBERT REED GRENINGER. 

